Originally inhabited by the Lenape people, the area surrounding Telford began to be settled in 1719 by Mennonites from the Palatinate of the Rhine.

In 1857, the town known as County Line (the area had previously been known as Hendrick's Blacksmith) changed its name to Telford after the North Pennsylvania Railroad Company (later absorbed into the Reading Railroad) named its new station there after civil engineer Thomas Telford.

The Borough of Telford was incorporated by decree of the Court of Quarter Sessions of Bucks County of November 10, 1886.

[4] A decade later, The Borough of West Telford was incorporated by decree of the Court of Quarter Sessions of Montgomery County of December 27, 1897.

[5] In 1934, the respective boroughs entered into an agreement for consolidation,[6] and an election was held on this question on November 6, 1934.

According to the United States Census Bureau, the borough has a total area of 1.0 square mile (2.6 km2), all land.

The line is used for occasional scenic rail trips, and resumption of passenger service to Quakertown is being considered.

SEPTA Suburban Bus Route 132 starts in Telford and ends at the Montgomery Mall in Montgomeryville, serving Souderton, Hatfield, and Lansdale.

[10] From 1901 to 1951, an interurban electric trolley line, Lehigh Valley Transit, known as the Liberty Bell Limited, ran from Telford north to Allentown (through Quakertown) and south (through Lansdale) to Philadelphia.

Ice storms and large snowstorms depositing ≥ 12 inches (30 cm) of snow occur once every few years, particularly during nor’easters from December through February.

[17] The spring bloom typically begins by April 13 and fall color usually peaks by October 27.